Twyer-iron



' Patented Nov. 29,1898.

J. CLARK.

. TWYER IRON. (Application flied 0ct.'5, 1897.)

(No modm TM: uonms mans co. PHOTO-HINDU waumo'rom a c UNITED STATES PATENT OEFicE.

JOHN- CLARK, OF LIBERTY, INDIANA;

VTWYER-IRON.

SPECIFICATION forming part of Letters Patent No. 615,230, dated November 29, 1898. Application filed October 5, 1897. Serial No. 654,179. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN OLARK,of Liberty,

in the county of Union and State of Indiana,

have invented certain new and useful Improvements in Twyer-Irons; and I do hereby declare the following to be a full, clear, and

ments in the twyer-iron patented to me Feb-- ruary 19, 1895, No. 534,250.

The invention consists in the novel features of construction hereinafter fully described and claimed, and illustrated by the accompanying drawings, in Which Figure 1 is a longitudinal sectional view of the iron. Fig. 2 is a central cross-sectional View showing the damper closed. Fig. 3 is a similar View with the damper open. Fig. 4 is a bottom plan View. Fig. 5 is a detail view of a portion of the damper-actuating rod.

The box or body'A of the iron is provided with the usual nozzle B, and projecting from opposite sides of its top edges are bolts secur ing lugs O. Fitting on thetop of the iron is the grated top or cover D, secured to lugs O by bolts E. Removably secured to the upper side of this top piece by screws F is the bowl F, and by means of this arrangement the bowl may be used or not, as desired. The grated ortion of top D is depressed, as indicated at and arranged longitudinally on the under side thereof is damper G, secured to position by clip G. The central portion of the damper is open at g, so that a slow fire may be maintained by closing the damper and permitting a limited amount of air to pass through said opening, or a more rapid fire may be had by opening the damper entirely.

For actuating the damper I provide rod J, which extends longitudinally through box A and to one side of its center and at a suitable distance beneath the damper. Carried by this rod are the spring-lifts K, the rod being slotted to receive one end of each lift, and in this manner the latter are firmly secured. The rod extends outward from the iron a suitable distance and is provided with hand hold J pressure While the damper is closed. The

latter is thusheld tightly against the under surface of the grate and the passage of the blast is confined to opening g. A yielding operating device is much more eifectual than an unyielding device, as it not only holds the grate and damper in the closest possible contact, practically sealing them together, but also takes up any wear that may occur on the adjacent surfaces of said parts. joint is essential for an economic consumption of fuel and complete concentration of draft through port 9.

Bottom opening A is adapted to be closed by slide L, the latter being formed on its under side with parallel ribs L to hold it in place upon securing-spring M, fastened at oneend to the iron-bottom. Extending from the end of the slide is wire N, which is curved upward and looped around the extended portion of rod J, which forms a guide therefor, the slide being conveniently opened and closed by re-.

Such close 2. An improved twyer-ironcomprising a 3. An improved twyer -iron, including a grate, a damper formed with an opening and adapted to close portions of the grate, and springs on opposite sides of the damper-opening for pressing against the damper when closed, substantially as shown and described.

4. An improved twyer-iron, including a blast-box, a grate, a swinging damper for partially closing the grate, a rotatable rod extended through the blast-box beneath the damper, and springs so mounted on the rod that when the'rod is rotated the springs will engage, close and hold the damper, substantially as shown and described.

5. An improved twyer-iron, including a blast-box, a grate, a swinging damper for partially closing the grate, a rotatable rod extended through the box beneath the damper, and cam-shaped springs so mounted on the rod that when the rod is rotated the springs will close the damper and hold it closed, substantially as shown and described.

6. An improved twyer-iron comprising an iron-body, having an open top, a downwardlyswinging damper, and rotatable lifting devices beneath the damper, substantially as shown and described.

7. The combination with the downwardlyswinging damper of a twyer-iron, of a rotatable lifting device beneath and eccentric to the damper and adapted to engage the under surface thereof, substantially as shown and described.

8. An improved twyer-iron comprising the iron-body having an open top portion, a downwardly-swinging damper for closing said open portion, a rotatable rod beneath the damper, and damper-lifting devices carried by the rod, substantially as shown and described.

9. The combination with the downwardlyswinging damper of a twyer-iron, of the rod beneath and paralleling the same, and the curved spring lifting devices secured to and rotatable with the rod and adapted to engage the under surface of the damper, substantially as shown and described.

10. The combination with the twyer having a pivoted damper, the rod formed with slots, and the curved lifting devices extended at one end through the slots and secured therein, substantially as shown and described.

11. The combination of the open-bottom twyer-iron, the slide for the opening, means for holding the slide in place, a rod extending outward from the twyer-iron, and a wire secured to one end of the slide and at its opposite end bent upward and looped loosely around the said rod and adapted to reciprocate thereon in opening and closing the damper, substantially as shown and described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN CLARK.

Witnesses:

C. A. LAW, D. S. TREENBLY. 

